NEWBIE HELP REQUIRED

A forum for discussing topics of particular interest to those running MegaSquirt in Australia and New Zealand, including parts sources, group buys, etc.
Post Reply
TA23
MegaSquirt Newbie
Posts: 3
Joined: Tue Sep 10, 2013 5:59 pm

NEWBIE HELP REQUIRED

Post by TA23 » Tue Sep 10, 2013 7:38 pm

Hello all,

I have just fitted an EFI 2TG engine ( with MegaSquirt II ) to a 76 Model Toyota Celica.
The engine and ECU module were working together prior to changeover.

The engine will crank but not start.
Is there a common mistake that new folks make that stops the injectors opening?

things I have checked:
all sensors seem to be working correctly on Tunerstudio
fuel at pressure in the fuel rail
spark at the sparkplugs
injectors have power, and work in "Test" mode

I have attached a log file of the engine cranking.
is there any obvious problems to the experienced eye?

thanks in advance Steve
Attachments
graph.png
(20.37 KiB) Not downloaded yet

User avatar
wagon
Helpful Squirter
Posts: 92
Joined: Sun Jul 17, 2005 4:10 am
Location: Toowoomba, QLD, Australia

Re: NEWBIE HELP REQUIRED

Post by wagon » Sat Sep 14, 2013 2:10 am

Hello Steve,

Are the injectors getting power whilst the motor is being cranked? Have a look-see, let us know!
1984 Ford Falcon 250ci inline 6 MS'd of course!

Now improved the way Ford should have built it with a 4speed automatic.

Also with 3.45 LSD for added goodness.

If you are hitting your head up against a wall it always feels better when you stop.

TA23
MegaSquirt Newbie
Posts: 3
Joined: Tue Sep 10, 2013 5:59 pm

Re: NEWBIE HELP REQUIRED

Post by TA23 » Sat Sep 14, 2013 3:34 am

** should I check the voltage at the injectors while cranking the engine?

I have a fusebox supplying the injectors, via a relay (energised via the ignition ON switch) from the battery.

User avatar
wagon
Helpful Squirter
Posts: 92
Joined: Sun Jul 17, 2005 4:10 am
Location: Toowoomba, QLD, Australia

Re: NEWBIE HELP REQUIRED

Post by wagon » Sun Sep 15, 2013 1:38 pm

TA23 wrote:** should I check the voltage at the injectors while cranking the engine?

I have a fusebox supplying the injectors, via a relay (energised via the ignition ON switch) from the battery.
Yes, check the voltage at the injectors at crank. Use an indicator lamp or something as a load, too.
1984 Ford Falcon 250ci inline 6 MS'd of course!

Now improved the way Ford should have built it with a 4speed automatic.

Also with 3.45 LSD for added goodness.

If you are hitting your head up against a wall it always feels better when you stop.

TA23
MegaSquirt Newbie
Posts: 3
Joined: Tue Sep 10, 2013 5:59 pm

Re: NEWBIE HELP REQUIRED

Post by TA23 » Thu Sep 19, 2013 1:48 am

Yes I have voltage at the injectors while cranking.
DOH! Found a problem.
The fuel pump is still from the original carby setup and only delivers 3psi, looks like we need another fuel pump that delivers HIGHER pressure.

User avatar
wagon
Helpful Squirter
Posts: 92
Joined: Sun Jul 17, 2005 4:10 am
Location: Toowoomba, QLD, Australia

Re: NEWBIE HELP REQUIRED

Post by wagon » Thu Sep 19, 2013 4:51 am

Ah ha! It sounds like you're getting there now.
1984 Ford Falcon 250ci inline 6 MS'd of course!

Now improved the way Ford should have built it with a 4speed automatic.

Also with 3.45 LSD for added goodness.

If you are hitting your head up against a wall it always feels better when you stop.

Post Reply